Portable mechanical exercising machine



May 28, 1929. v. SHAW 011mm: MECHANICAL mxnngrsms mama Filed March 22, 1928 5 Sheets-Shqet 1 L. v. SHAW PORTABLE MECHANICAL'EXERCISING MACHINE May 28, 1929.

5 Sheets$heet Filed March 22, 1928 May 28, 1929. 1.. v. SHAW PORTABLE MECHANICAL EXERCISING MACHINE Filed March 22; 1928 s Sheets-Sheet :5

tached to a door amb, or similar form of ver- Patented May 28, 1929.

UNITE LOUIS V. SHAW, OF WAU'WA'IQSA, WISCONSIN.

PORTABLE MECHANICAL EXERCISING MACHINE.

Application filed March 22, 1928. Serial No. 263,650.

of the present machines on the market, and I which is comparatively light, compact, and inexpensive, whereby the same is readily portable, may be quickly attached to any desired support, and is Within the reach of people of moderate financial circumstances.

Incidental to the foregoing, a further ob ject is to provide a compact structure, wherein the motor and actuated mechanism is housed within a unitary casing. 7

Another object is to provide novel means for detachably clamping the machine to any suitable support, .such as a door jamb, window casing, bath tub, or other convenient support.

Another object is .to provide a machine which may be quickly detached from its clamping means to render the same more com pact in shipping.

A still further object is to provide novel means for attaching the various appurtenances, whereby accidental detachment is prevented during operation.

lVith the above andother objects in View,

which will appear as the description proceeds, the invention resides in thenovel construction, combination and arrangement of parts substantially as hereinafter described and more particularly defined by the append ed claims, it being understood that such changes in the precise embodiment of the herein disclosed invention may-be made as come within'the scope of the claims.

In the accompanying drawings is illus tratcd one complete example of the physical embodiment of the present invention con structed according tothe best mode so far devised for the practical application of the principles thereof. V

Figure 1 is an elevational view of a ma chine constructed in accordance with the present invention, illustrating the same attical support.

Figure '2 is a longitudinal, sectional view the motor housing,

taken through the motor and mechanism housing, and the supporting bracket, the same being indicated on the line 22 ofFigure 3.

F igure 3 is a transverse section taken on theline 33 of Figure 2.

Figure 4 is a transverse section through illustrating the method of supporting the motor. w a

Figure 5 isa detailed view of one of the appurtenances used in connection with the presentmachinei v Figure 6 is a 'detailedsection taken on the line 6 6 of Figure 5, and V j Figure 7 is a detailed .vieW of theclamping bracket employed.

Referring now more particularly to the accompanying drawings, the numeral 1 designates ahousing open at its ends and provided with an intermediate partititon 2 having a central bearing 3. Removably secured to the ends of the housing 1 by means of bolts 1, or other suitable means, are the closure plates 5, each provided with inwardly projecting, central bosses 6, recessed for the reception of antifriction bearings '7. V -.The forward chamber 8, formed in the housing 1, isprovided with radially spaced,

longitudinal ribs 9, whichengage and support the field lO of a conventionaltype of electric motor.

The armature shaft-11 extends throughoutentire length of the housing 1 and is journaled in the ball races 7, and the central bearingB in the partition 2. Thus it will be seen that the armature shaft is supported at three points and is held against end thrust by the anti-frictional bearings'l' 1 '1 Mounted on the armature shaft llwithin the rearcompartment 12 isa worm l3'which meshes with the worm Wheel 14 mounted on the transverse shaft 15., which shaft is journaled in the anti-friction bearings 16 mount ed in the bosses 17 formed in the housing 1. The bosses 17 are recessed at the exterior of the casing for the reception of the pitmen 18 mounted on the outer ends of the transverse shaftll. The pitmen 18 carry the crank pins 19, to which are secured the connecting links 20, that int-urn are secured to the plungers 21, slidablyjournale'd in the bearings 22 formed on opposite sides of the housing 1.

In order to render-the present machine more compact for shipping, it is proposed to form the clamping means separate and distinct from the housing for the motor and actuated mechan sm. The supporting bracket 22 is therefore provided, which has a face 23 adapted to abut any vertical support. Formed in the bracket 22 is a recessed boss 24 for the reception of a tie-rod 25,

which rod is detachably secured in the'boss by a tapered pin 26.

For the purpose of rigidly attaching the the supporting bracket 22- 'to a convenient support, a clamping bracket 33 is'adjustable mounted on the tie-rod 25, and may be locked in adjusted position by a pin 31 adapted to register with the spaced openings 34L, provided in the tie-rod. The'bracket 33 is provided with a pair of offset arms 35, each of which carries a thumb screw 36 adapted to clampingly engage a support, which, in the prese'pt instance, is illustrated as adoor casin 3 irom the foregoing description it will be readily appreciated that a very simple and compact structure has been provided, which is exceedingly light and readily portable, the portability being facilitated by a handle 38 secured to the housing 1. It will also be seen that the motor and actuated parts are readily accessible for inspection or lubrication when necessary. Particular attention is also directed to the fact that. the novel clamping means provided enables the machine to be attached to a support at a height most desirable and convenient to the operator, which feature is lacking in the present types of machines on the market. It Willalso be understood that the particular structure of clamping meansprovided readily lends itself for rigid attachment to any form of stationary support, such as a window sill, door casing, bath tub, or the like, as the bracket 33 may be quickly adjusted on the tie-rod 25, and-clamping action thereafter obtained through the thumb screws 36.

. In theuse ofthe device various appurte-' nances, may be employed, which appurtenances essentially include a flexible belt or strap 39, the ends of which are attached to the reciprocating plungers 21. IIeretofore it has been common practiseto provide loopsin the ends of the belt, and adapted to be slipped over arms or lugs formed 011 the ends of the plungers. In practise it hasbeen found that the belts attachedin this manner become accidentally disengaged from the plungers during the operation of the machine. The pres-- ent invention therefore aims to overcome this objectionable feature by providing the outer ends of the plungers 21 withhooks 40, the

the pintles 12 having a flattened face 12, as

best shown in Figure 5, which permits them to be inserted past the restricted mouths of r the hooks 10 and thereafter turned to lock 'in' operative position.

To eliminate a multiplicity of appurtenances it is also proposed to attach grips 4A to the belt 39, which permits the use of the same for exercises not requiring the belt.

In operation it will be readily seen that simultaneous and alternate reciprocatory motion is transmitted to the plungers 21 by means of the worm and worm wheel drive between the motor and transverse shaft 15, which in turn drives the pitmen 18. In practice the ends of the belt are secured to the hooks 40, which will cause an oscillatory movement of the belt to cause vibration to the portions of the body over which the belt is passed. The advantages and benefits de rived from the foregoing exercise areso well-known as to require no further emphasis here. 7

While the motor and actuated parts are compactly housed, it will be noted that provision is made for ventilating the. front chamber 8 to cool the motor. This is accomplished by the openings 45 and 16 formed in the front end closure 5 and motor housing 1, respectively. The rear housing, which contains the driving mechanism, is completely closed, thus affording opportunity to adequately grease or lubricate the driving transmission.

I claim 7 1. A portable exercising machine compris- -tral partition and open at its ends, closure plates secured to the ends of said housing, a motor mounted within said housing and having an armature shaft journaled in said partition and end closures, said housing be ing provided with openings to ventilate said motor chamber, a transverse shaft journaled,

in said housing and having its ends projecting therefrom, a worm gear drive between said armature shaft and transverse shaft, cranks mounted on the proj ectingend of said transverse shaft, plungers slidably ournaled upon opposite sides of said casing, links connecting said cranks and plungers' forreciproeating said plungers, hooks formed on the ends of said plungersfor the reception of exing a unitary housing provided with a cen ercising appurtenances, said hooks having I restricted mouths for locking said appurtenances when in operative position.

2. A portable exercising machine comprismg a unitary housmg provided with a central partitlon and open at 1ts ends, closure plates secured to the ends of said housing a' motor mounted within said housing and hairmg an armature shaft ]Q\1I'I1a.l(5(l 1n saidpartition and end closures, a transverse shaft journaled in the housing and having its ends projecting therefrom, means forming operative connection between the armature shaft and transverse shaft, cranks mounted on the projecting ends of said transverse shaft, plungers slidably journaled upon opposite sides of said casing, links connecting said cranks and plungers for reciprocating the plungers, hooks formed on the ends of said plungers for the reception of exercising appurtenances.

ing, slotted supporting legs therefor, a bracket, bosses carried by the bracket, thumb 15 screws mounted in said bosses, nuts on the huinb screws and laterally pro ect1n-g lugs on the nuts for engaging the slotted legs to retain the housing against movement rela-' LOUIS v. SHAW. i 

